Projectile



(No Model.)

J. JL MOINTYRE. PROJETILE.

No. 484,862.' Patented -0ot 25,

ngz.

UNITED i STATES- PATENT OFFICE.

JOSEPH J. MCINTYRE, OF BROOKLYN, NEW YORK.

P'RoJ EoTl Le.

SPECIFICATION forming part of Letters Patent No."484,862, datedOctober 25, 1892. Application filed January 15, 1892. Serial No. 418,161. (No model.)

To all whom itmay concern:

Be it known that I, JOSEPH J. MCINTYRE, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Projectiles, of which the following is a full, clear, and exact description.

My invention relates to an improvement in projectiles, and has t'or its object to provide a safe and'sure medium whereby the ame may be conveyed from the base of the projectile to the fuse-chamber and insure perfect ignition; and the invention consists inthe novel construction of the projectile, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be hadl to the accompanying drawings, forming a part of this specification, in which similar figures and letters of reference indicate corresponding parts in both the views. v

Figure 1 is a longitudinal section through the projectile, taken, practically, on the line l 1 of Fig. 2; and Fig. 2 is a diametrical or transverse section taken on the line 2 2 of Fig. 1.

In the base of the projectile, ordinarily near one side, a cavity or pocket 10 is produced, which pocket, through the medium of a channel 11, is in communication with an interior chamber A of theprojectile, adapted to contain the charge. The point or forward end of the projectile consists of a plug 12, secured to the body of the projectile, which plug covers an air or flame chamber 13,- formed in the body of the projectile in front of a partition 14, dividingthe air-chamber from the charge chamber or compartment A. In the partition 14 au opening is formed, into which opening a fuse-plug 15 of ay'improved construction is entered and secured. This plug extends within the charge chamber or recep' tacle and is hollow, `its interior surface being conical, and the plug is also openat both ends. In the drawings said fuse consists of powder or other highly combustible land explosive material inclosed within a jacket 17 of paper or other preferred material, and the fuse is conical, so as to fit to the interior contour of the plug and prevent the fuse being blown Into this plug the fuse 16 is entered.

into the charge-chamber bythe action of The air-chamber 13 is connected by a channel 18 with the charge-chamber at one side ot the fuse-plug., A tube 19 is screwed into the inner end of the channel 18, and the tube extends rearward through the charge-chamber and the channel 1l in the base of the projectile into the pocket or cavity 10. Within 'this pocket or cavity a plug 20 is located, the plug comprising, preferably, a disk-like body and a shank emanating from the central portion of its inner face, and the shank of the base-plug 2O is threaded and screwed into the rear end of the tube 19, as is best shown in Fig. 1. This plug is provided with an opening 2l, extending through its body and through its shank, thereby affording communication between *the charge ordinarily located at the back ofthe projectile andthe interior ofthe tube 19. This opening 21 is prefe-iably made somewhat tapering, the narrower portion vbeing at the outer face of the plug. A packing of any suitable and preferred character interposes the base-plug and the walls of the pocket or cavity 10.

The frontplug 12 has openings 22 formed therein communicating withthe air-chamber 13. These openings are really vents, and are intended to carry ed gases from the fuse.

` In operation the flame from the combustible material carried at the back of the projectile will pass through the openinv 2l in the baseplug 20, from thence into the ube 19 through the tube and the channel 18 and chamber 13,

and will then ignite the fuse 16, thus in proper,

balance the projectile a counterpoise-weight 23 is placed, preferably, in the lcharge-chamber A, as is shown in both Figs. 1 and 2, at the side immediately opposite' that in which the tube 19 is located. The space between the walls of the pocket or cavity 10 and the ICO base-plug 2O is filled with lead, copper, or any soft metal, so as to prevent the gases driving through the pocket around the tube into the charge-chamber A and thereby'prematurely exploding the contents of that chamber, and is also so'constructed that the tube can expand or contract and It will thus be observed that the tube 19 is the medium by means of which the iiange may be conveyed from the base of the projectile to the fuse-chamber, thus insuring perfect ignition. The tube is perfectly safe, being about twelve times as large in diameter as the inlet 21. Thus the tube is capable of freely taking away any gases that mayenter through said inlet.

If in practice it is f ound desirable, the tube may be cast in the projectile or may be con nected therewith in any approved manner, and any desired number of tubes maybe employed, it being understood that' in con-nec tion with each tube a plug 20 is used, having the dame-inlet 21, or an independent lfuseplug can be inserted in the tube instead of said opening.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- 1. A projectile provided at one end with a fuse-plug and also provided with a tube which establishes communication between the base of the shell and a space formed above the fuse-plug, substantially as shown and described, whereby the fuse-plug may be ignited by a flame passed through the tube, as and for the purpose specified.

be perfectly safe.

2. A shell provided with a chargechamber,

a fuse-plug one portionV of which extends within the charge-chamber, and a firing-tube establishing communication between the outer end of the fuse-plug and the bas'e of the shell, which plug passes through the chargechaniber, but has no communication with it, substantially as shown and described. 3. The combination, with the fuse-plugand fuse of a projectile and a plug located in the base of the projectile and provided with a through-aperture, of a tube connected at one end with'the base-plug, said tube being of much greater diameter than the aperture in said base-plug, the opposite end of the tube heilig in communication with the fuse and fuse-plug, as and for the purpose specified.

4. The combination, with a projectile pro-- vided with a pocket in its base, an interior charge-chamber, an air or fuse chamber, and a fuse located between the air or flame chamber and the charge-chamber, of aplug located in the base-pocket of the projectile, provided with an aperture'extending through from its inner to its outer face, a tube connected with the base-plug at one .endand connected at its opposite end with the fuse or air chamber, and a packing fitting the space between the Abase-plug and the walls of the pocket in the base of the projectile, substantially as and for the purpose specified.

JOSEPH J. MCINTYRE. 

